If we used the blockchain for Open Badges, then we could prove beyond reasonable doubt that the person receiving badge Y is the same person who created evidence X. This would use a “proof of work” system. At the moment, the situation is still better than paper-based certificates but, such an approach would allow Open Badges to be used in extremely high-stakes situations. The blockchain would prove a connection between the evidence and the badge. More details could be unlocked if the earner chooses to share his or her key.